Your doctor may have ordered a blood test and you may have wondered, "What is this?" when you saw something called "Reticulocyte Count" on the report. This test was probably done to find the cause of your anemia. It's normal to feel a little scared when you see words like these. But don't worry, so today we'll talk about this very simply, in a way that you can understand.
Simply put, what is this Reticulocyte Count?
Think of your bone marrow as a factory that makes red blood cells. This factory is constantly making new red blood cells and adding them to your blood. This is because new red blood cells are needed to replace old, dying red blood cells.
Reticulocytes are, to be precise, "baby" or "immature" red blood cells that come out of this factory. These are released into the blood and become fully mature red blood cells within a day or two.
So, with this Reticulocyte Count test, we are looking at how well your bone marrow factory is working and whether it is producing enough new red blood cells for the body.
Why would a doctor recommend this test?
There may be several reasons why a doctor might recommend this test.
- Find the cause of anemia: If you have anemia, this test helps determine whether the cause is a decrease in the production of red blood cells by the bone marrow, or whether the red blood cells that are produced are being destroyed too quickly.
- Check bone marrow function: This is important to ensure that your bone marrow is producing the necessary amount of new red blood cells.
- Measure response to treatment: If you have received chemotherapy for conditions such as cancer, or if you have had a bone marrow transplant , this test is done to make sure that the bone marrow is working properly again after those treatments.
What is the average value of this? How is the test done?
Reticulocyte count is usually measured as a percentage of your total red blood cell count.
- For an adult , this value should generally be between 0.5% and 2.5% .
- For a newborn baby, this can be a little higher, between 2% and 6% .
This test is very simple to perform. A small sample of blood is taken from a vein in your arm. It is then sent to a lab, where a special device is used to count the number of these immature red blood cells in your blood.
What happens if the reticulocyte count decreases or increases?
Whether this number is lower or higher than normal, it indicates that there may be a problem with the blood.
But this is just one test. You can't draw a conclusion about a disease just by looking at this report. Therefore, it is important to talk to your doctor about this. He or she will explain this to you in relation to your situation.
Possible reasons for a low reticulocyte count
A low count simply means that your bone marrow is not producing enough new red blood cells. Below are some of the conditions that can cause this.
| Condition/Cause | Simple explanation |
|---|---|
| Chronic disease anemia | Bone marrow function can decrease in cases of long-term illnesses such as diabetes, heart disease, kidney disease, and cancer. |
| Nutritional anemias | When the body doesn't get enough iron, vitamin B12, or folate, it can't make red blood cells. An example is iron-deficiency anemia. |
| Aplastic anemia | This is a rare condition. In this condition, the number of stem cells that make blood cells in the bone marrow decreases, resulting in a decrease in the production of not only red blood cells, but also white blood cells and platelets. |
| Myelodysplastic syndrome | This is a cancerous condition that affects the bone marrow. In this case, the production of healthy red blood cells from stem cells stops. |
Possible reasons for an increased reticulocyte count
An increase in this value means that for some reason, the rate at which red blood cells are destroyed in the body has increased, and the bone marrow factory is working overtime (overdrive) to make up for the shortage.
| Condition/Cause | Simple explanation |
|---|---|
| Hemolytic anemia | Normally, a red blood cell lives for about 120 days. But in this condition, the red blood cells are destroyed before that time. To make up for the shortage, the bone marrow rapidly produces new reticulocytes. |
| Blood loss | If a large amount of blood is lost suddenly, such as in an accident, or if there is continuous bleeding, such as from a stomach wound, the bone marrow works overtime to replace the lost blood. |
Things to ask your doctor
It's normal to have questions about your report, so don't be afraid to ask these questions when you go to see your doctor.
- "Why did the doctor tell me to do this test?"
- "What do the values in this report say about my condition?"
- "Will I need to have any more blood tests?"
- "What should we do about this situation?"
You have every right to know about your health. So feel free to ask anything that comes to your mind.
Take-Home Message
- Reticulocyte Count is a simple blood test that measures how well your bone marrow is making new red blood cells.
- A value that is lower or higher than normal may be a sign of a blood-related condition.
- However, this is just one test. No diagnosis can be made based on this report alone.
- If you have any concerns or doubts about the values in your report, the best person to clarify them is your doctor . Talk to him/her openly.
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